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<?php |
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/** |
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* inetprocess/transformation |
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* |
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* PHP Version 5.3 |
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* |
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* @author Emmanuel Dyan |
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* @copyright 2005-2015 iNet Process |
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* |
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* @package inetprocess/transformation |
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* |
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* @license GNU General Public License v2.0 |
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* |
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* @link http://www.inetprocess.com |
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*/ |
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namespace Inet\Transformation\Rule; |
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use Inet\Transformation\Exception\TransformationException; |
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/** |
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* Replace a string with a Regexp |
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*/ |
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class ReplaceRegexp extends AbstractRule |
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{ |
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/** |
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* PHP Constants that says what's happened with the PregRegexp |
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* |
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* @var array |
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*/ |
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protected $pregErrs = array( |
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\PREG_INTERNAL_ERROR => 'Internal Error', |
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\PREG_BACKTRACK_LIMIT_ERROR => 'Backtrack limit', |
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\PREG_RECURSION_LIMIT_ERROR => 'Recursion limit', |
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\PREG_BAD_UTF8_ERROR => 'Bad UTF-8', |
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\PREG_BAD_UTF8_OFFSET_ERROR => 'Bad UTF-8 Offset' |
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); |
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/** |
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* Operate the transformation |
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* |
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* @param string $input |
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* @param array $arguments |
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* |
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* @throws Inet\Transformation\Exception\TransformationException |
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* |
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* @return string |
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*/ |
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public function transform($input, array $arguments) |
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{ |
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// I should have two arguments: old format / new format |
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if (count($arguments) !== 2) { |
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throw new TransformationException('Rule ReplaceRegexp Expects exactly 2 arguments'); |
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} |
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// Validate That the regexp was OK |
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$output = preg_replace($arguments[0], $arguments[1], $input); |
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if (is_null($output)) { |
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$pregErr = preg_last_error(); |
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$pregMsg = array_key_exists($pregErr, $this->pregErrs) ? $this->pregErrs[$pregErr] : 'Unknown error'; |
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$msg = 'ReplaceRegexp was not able to transform your string: '.$pregMsg; |
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throw new TransformationException($msg); |
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} |
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return $output; |
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} |
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} |
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inetprocess /
transformation
